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【多选题】
多选题电网按照电压等级和承担功能的不同分为三个子系统，即包括（）A.
输电网络
B.
次级输电网络
C.
配电网络
D.
供电线路
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】关于大肠的叙述,下列哪项是正确的( )
A.
都有结肠带、结肠袋和肠脂垂
B.
包括盲肠、阑尾、结肠、直肠和肛管
C.
阑尾根部的结肠带已消失
D.
回盲瓣是大肠的起始部位
E.
乙状结肠的结肠袋不明显
【单选题】关于直肠,下列叙述哪项正确
A.
．只由肠系膜下动脉供血
B.
．仅在上 1 ∕ 3 的前面有腹膜覆盖
C.
C．长约 5 ㎝
D.
D．在骶骨上端起始
E.
E．在男性，其前方有膀胱
【简答题】10 shefirst heard of the man referred toA. That was from Charles B. It was Charles whom C. It was from Charles that D. It was Charles that
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